Kyocera, R&S to Demonstrate OTA Characterization of mmWave PAAM
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In Kyocera’s Booth #1651 at IMS 2025, Kyocera and Rohde & Schwarz will demonstrate the characterization of a mmWave, phased-array antenna aimed at a variety of sensing and communication applications. The demo centers on Rohde’s ATS1800M 5G NR multi-directional mmWave test chamber, designed for over-the-air (OTA) testing with an exceptionally small footprint.
The demonstration will focus on mobile communications in the 5G FR2, n257 band, where mobile communications experience a high path loss that’s ameliorated by using beamforming antenna arrays.
In contrast to traditional antennas, FR2 antennas typically use phased arrays with a high number of individual antenna elements. Kyocera has developed a phased-array antenna module (PAAM) featuring 384 dual-polarization elements, which can create up to eight simultaneous beams in different directions at different frequencies.
Kyocera’s PAAM enables multiple operators to run networks on different frequency bands. In protection applications, PAAM technology can be adapted to sense threats, perform surveillance, and communicate simultaneously. However, all of these antenna elements must work together perfectly to form an RF beam with the desired characteristics.
Rohde & Schwarz’s approach for OTA testing of such a complex antenna array takes place in a fully shielded environment. It helps engineers verify the correct beam pattern and supports the process of minimizing sidelobes.
The R&S ATS1800M features four feed antennas and CATR reflectors, each with a 30-cm quiet zone (QZ). At IMS, the Kyocera PAAM device under test (DUT) is placed on a rugged 3D positioner in the center, where all four QZs overlap, coming from multiple directions. This allows Kyocera’s engineers to address a variety of different tests, including the simultaneous reception of RF beams from four different directions.
The full test setup contains multiple test instruments from Rohde & Schwarz in addition to the mmWave test chamber, which work seamlessly together. They include four 5G NR-capable SMW200A vector signal generators, two 5G NR-capable signal and spectrum analyzers (FSW and FSVA3044), as well as a ZNA four-port vector network analyzer and two NGP power supplies.
